Each license acquires a specification that contains all inventory information:
type, serial number and other ID details;
installation data;
accountaning data;
registration date;
subscription period;
parameters;
maintenance and transfer history, etc.
A license can be assigned either to a device (system unit, HDD, etc.) or to a workplace. Assigning licences to devices is convenient in case of OEM versions: if such is transferred, the license is transferred too.